sound/soc/codecs/ak4118.c - third_party/linux - Git at Google

 // SPDX-License-Identifier: GPL-2.0
 /*
  * ak4118.c  --  Asahi Kasei ALSA Soc Audio driver
  *
  * Copyright 2018 DEVIALET
  */

 #include <linux/i2c.h>
 #include <linux/gpio/consumer.h>
 #include <linux/module.h>
 #include <linux/of_device.h>
 #include <linux/of_gpio.h>
 #include <linux/regmap.h>
 #include <linux/slab.h>

 #include <sound/asoundef.h>
 #include <sound/core.h>
 #include <sound/initval.h>
 #include <sound/soc.h>

 #define AK4118_REG_CLK_PWR_CTL		0x00
 #define AK4118_REG_FORMAT_CTL		0x01
 #define AK4118_REG_IO_CTL0		0x02
 #define AK4118_REG_IO_CTL1		0x03
 #define AK4118_REG_INT0_MASK		0x04
 #define AK4118_REG_INT1_MASK		0x05
 #define AK4118_REG_RCV_STATUS0		0x06
 #define AK4118_REG_RCV_STATUS1		0x07
 #define AK4118_REG_RXCHAN_STATUS0	0x08
 #define AK4118_REG_RXCHAN_STATUS1	0x09
 #define AK4118_REG_RXCHAN_STATUS2	0x0a
 #define AK4118_REG_RXCHAN_STATUS3	0x0b
 #define AK4118_REG_RXCHAN_STATUS4	0x0c
 #define AK4118_REG_TXCHAN_STATUS0	0x0d
 #define AK4118_REG_TXCHAN_STATUS1	0x0e
 #define AK4118_REG_TXCHAN_STATUS2	0x0f
 #define AK4118_REG_TXCHAN_STATUS3	0x10
 #define AK4118_REG_TXCHAN_STATUS4	0x11
 #define AK4118_REG_BURST_PREAMB_PC0	0x12
 #define AK4118_REG_BURST_PREAMB_PC1	0x13
 #define AK4118_REG_BURST_PREAMB_PD0	0x14
 #define AK4118_REG_BURST_PREAMB_PD1	0x15
 #define AK4118_REG_QSUB_CTL		0x16
 #define AK4118_REG_QSUB_TRACK		0x17
 #define AK4118_REG_QSUB_INDEX		0x18
 #define AK4118_REG_QSUB_MIN		0x19
 #define AK4118_REG_QSUB_SEC		0x1a
 #define AK4118_REG_QSUB_FRAME		0x1b
 #define AK4118_REG_QSUB_ZERO		0x1c
 #define AK4118_REG_QSUB_ABS_MIN		0x1d
 #define AK4118_REG_QSUB_ABS_SEC		0x1e
 #define AK4118_REG_QSUB_ABS_FRAME	0x1f
 #define AK4118_REG_GPE			0x20
 #define AK4118_REG_GPDR			0x21
 #define AK4118_REG_GPSCR		0x22
 #define AK4118_REG_GPLR			0x23
 #define AK4118_REG_DAT_MASK_DTS		0x24
 #define AK4118_REG_RX_DETECT		0x25
 #define AK4118_REG_STC_DAT_DETECT	0x26
 #define AK4118_REG_RXCHAN_STATUS5	0x27
 #define AK4118_REG_TXCHAN_STATUS5	0x28
 #define AK4118_REG_MAX			0x29

 #define AK4118_REG_FORMAT_CTL_DIF0	(1 << 4)
 #define AK4118_REG_FORMAT_CTL_DIF1	(1 << 5)
 #define AK4118_REG_FORMAT_CTL_DIF2	(1 << 6)

 struct ak4118_priv {
 	struct regmap *regmap;
 	struct gpio_desc *reset;
 	struct gpio_desc *irq;
 	struct snd_soc_component *component;
 };

 static const struct reg_default ak4118_reg_defaults[] = {
 	{AK4118_REG_CLK_PWR_CTL,	0x43},
 	{AK4118_REG_FORMAT_CTL,		0x6a},
 	{AK4118_REG_IO_CTL0,		0x88},
 	{AK4118_REG_IO_CTL1,		0x48},
 	{AK4118_REG_INT0_MASK,		0xee},
 	{AK4118_REG_INT1_MASK,		0xb5},
 	{AK4118_REG_RCV_STATUS0,	0x00},
 	{AK4118_REG_RCV_STATUS1,	0x10},
 	{AK4118_REG_TXCHAN_STATUS0,	0x00},
 	{AK4118_REG_TXCHAN_STATUS1,	0x00},
 	{AK4118_REG_TXCHAN_STATUS2,	0x00},
 	{AK4118_REG_TXCHAN_STATUS3,	0x00},
 	{AK4118_REG_TXCHAN_STATUS4,	0x00},
 	{AK4118_REG_GPE,		0x77},
 	{AK4118_REG_GPDR,		0x00},
 	{AK4118_REG_GPSCR,		0x00},
 	{AK4118_REG_GPLR,		0x00},
 	{AK4118_REG_DAT_MASK_DTS,	0x3f},
 	{AK4118_REG_RX_DETECT,		0x00},
 	{AK4118_REG_STC_DAT_DETECT,	0x00},
 	{AK4118_REG_TXCHAN_STATUS5,	0x00},
 };

 static const char * const ak4118_input_select_txt[] = {
 	"RX0", "RX1", "RX2", "RX3", "RX4", "RX5", "RX6", "RX7",
 };
 static SOC_ENUM_SINGLE_DECL(ak4118_insel_enum, AK4118_REG_IO_CTL1, 0x0,
 			    ak4118_input_select_txt);

 static const struct snd_kcontrol_new ak4118_input_mux_controls =
 	SOC_DAPM_ENUM("Input Select", ak4118_insel_enum);

 static const char * const ak4118_iec958_fs_txt[] = {
 	"44100", "48000", "32000", "22050", "11025", "24000", "16000", "88200",
 	"8000", "96000", "64000", "176400", "192000",
 };

 static const int ak4118_iec958_fs_val[] = {
 	0x0, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9, 0xA, 0xB, 0xC, 0xE,
 };

 static SOC_VALUE_ENUM_SINGLE_DECL(ak4118_iec958_fs_enum, AK4118_REG_RCV_STATUS1,
 				  0x4, 0x4, ak4118_iec958_fs_txt,
 				  ak4118_iec958_fs_val);

 static struct snd_kcontrol_new ak4118_iec958_controls[] = {
 	SOC_SINGLE("IEC958 Parity Errors", AK4118_REG_RCV_STATUS0, 0, 1, 0),
 	SOC_SINGLE("IEC958 No Audio", AK4118_REG_RCV_STATUS0, 1, 1, 0),
 	SOC_SINGLE("IEC958 PLL Lock", AK4118_REG_RCV_STATUS0, 4, 1, 1),
 	SOC_SINGLE("IEC958 Non PCM", AK4118_REG_RCV_STATUS0, 6, 1, 0),
 	SOC_ENUM("IEC958 Sampling Freq", ak4118_iec958_fs_enum),
 };

 static const struct snd_soc_dapm_widget ak4118_dapm_widgets[] = {
 	SND_SOC_DAPM_INPUT("INRX0"),
 	SND_SOC_DAPM_INPUT("INRX1"),
 	SND_SOC_DAPM_INPUT("INRX2"),
 	SND_SOC_DAPM_INPUT("INRX3"),
 	SND_SOC_DAPM_INPUT("INRX4"),
 	SND_SOC_DAPM_INPUT("INRX5"),
 	SND_SOC_DAPM_INPUT("INRX6"),
 	SND_SOC_DAPM_INPUT("INRX7"),
 	SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0,
 			 &ak4118_input_mux_controls),
 };

 static const struct snd_soc_dapm_route ak4118_dapm_routes[] = {
 	{"Input Mux", "RX0", "INRX0"},
 	{"Input Mux", "RX1", "INRX1"},
 	{"Input Mux", "RX2", "INRX2"},
 	{"Input Mux", "RX3", "INRX3"},
 	{"Input Mux", "RX4", "INRX4"},
 	{"Input Mux", "RX5", "INRX5"},
 	{"Input Mux", "RX6", "INRX6"},
 	{"Input Mux", "RX7", "INRX7"},
 };


 static int ak4118_set_dai_fmt_master(struct ak4118_priv *ak4118,
 				     unsigned int format)
 {
 	int dif;

 	switch (format & SND_SOC_DAIFMT_FORMAT_MASK) {
 	case SND_SOC_DAIFMT_I2S:
 		dif = AK4118_REG_FORMAT_CTL_DIF0 | AK4118_REG_FORMAT_CTL_DIF2;
 		break;
 	case SND_SOC_DAIFMT_RIGHT_J:
 		dif = AK4118_REG_FORMAT_CTL_DIF0 | AK4118_REG_FORMAT_CTL_DIF1;
 		break;
 	case SND_SOC_DAIFMT_LEFT_J:
 		dif = AK4118_REG_FORMAT_CTL_DIF2;
 		break;
 	default:
 		return -ENOTSUPP;
 	}

 	return dif;
 }

 static int ak4118_set_dai_fmt_slave(struct ak4118_priv *ak4118,
 				    unsigned int format)
 {
 	int dif;

 	switch (format & SND_SOC_DAIFMT_FORMAT_MASK) {
 	case SND_SOC_DAIFMT_I2S:
 		dif = AK4118_REG_FORMAT_CTL_DIF0 | AK4118_REG_FORMAT_CTL_DIF1 |
 		      AK4118_REG_FORMAT_CTL_DIF2;
 		break;
 	case SND_SOC_DAIFMT_LEFT_J:
 		dif = AK4118_REG_FORMAT_CTL_DIF1 | AK4118_REG_FORMAT_CTL_DIF2;
 		break;
 	default:
 		return -ENOTSUPP;
 	}

 	return dif;
 }

 static int ak4118_set_dai_fmt(struct snd_soc_dai *dai,
 			      unsigned int format)
 {
 	struct snd_soc_component *component = dai->component;
 	struct ak4118_priv *ak4118 = snd_soc_component_get_drvdata(component);
 	int dif;
 	int ret = 0;

 	switch (format & SND_SOC_DAIFMT_MASTER_MASK) {
 	case SND_SOC_DAIFMT_CBM_CFM:
 		/* component is master */
 		dif = ak4118_set_dai_fmt_master(ak4118, format);
 		break;
 	case SND_SOC_DAIFMT_CBS_CFS:
 		/*component is slave */
 		dif = ak4118_set_dai_fmt_slave(ak4118, format);
 		break;
 	default:
 		ret = -ENOTSUPP;
 		goto exit;
 	}

 	/* format not supported */
 	if (dif < 0) {
 		ret = dif;
 		goto exit;
 	}

 	ret = regmap_update_bits(ak4118->regmap, AK4118_REG_FORMAT_CTL,
 				 AK4118_REG_FORMAT_CTL_DIF0 |
 				 AK4118_REG_FORMAT_CTL_DIF1 |
 				 AK4118_REG_FORMAT_CTL_DIF2, dif);
 	if (ret < 0)
 		goto exit;

 exit:
 	return ret;
 }

 static int ak4118_hw_params(struct snd_pcm_substream *substream,
 			    struct snd_pcm_hw_params *params,
 			    struct snd_soc_dai *dai)
 {
 	return 0;
 }

 static const struct snd_soc_dai_ops ak4118_dai_ops = {
 	.hw_params = ak4118_hw_params,
 	.set_fmt   = ak4118_set_dai_fmt,
 };

 static struct snd_soc_dai_driver ak4118_dai = {
 	.name = "ak4118-hifi",
 	.capture = {
 		.stream_name = "Capture",
 		.channels_min = 2,
 		.channels_max = 2,
 		.rates = SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_32000 |
 			 SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |
 			 SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000 |
 			 SNDRV_PCM_RATE_176400 | SNDRV_PCM_RATE_192000,
 		.formats = SNDRV_PCM_FMTBIT_S16_LE  |
 			   SNDRV_PCM_FMTBIT_S24_3LE |
 			   SNDRV_PCM_FMTBIT_S24_LE
 	},
 	.ops = &ak4118_dai_ops,
 };

 static irqreturn_t ak4118_irq_handler(int irq, void *data)
 {
 	struct ak4118_priv *ak4118 = data;
 	struct snd_soc_component *component = ak4118->component;
 	struct snd_kcontrol_new *kctl_new;
 	struct snd_kcontrol *kctl;
 	struct snd_ctl_elem_id *id;
 	unsigned int i;

 	if (!component)
 		return IRQ_NONE;

 	for (i = 0; i < ARRAY_SIZE(ak4118_iec958_controls); i++) {
 		kctl_new = &ak4118_iec958_controls[i];
 		kctl = snd_soc_card_get_kcontrol(component->card,
 						 kctl_new->name);
 		if (!kctl)
 			continue;
 		id = &kctl->id;
 		snd_ctl_notify(component->card->snd_card,
 			       SNDRV_CTL_EVENT_MASK_VALUE, id);
 	}

 	return IRQ_HANDLED;
 }

 static int ak4118_probe(struct snd_soc_component *component)
 {
 	struct ak4118_priv *ak4118 = snd_soc_component_get_drvdata(component);
 	int ret = 0;

 	ak4118->component = component;

 	/* release reset */
 	gpiod_set_value(ak4118->reset, 0);

 	/* unmask all int1 sources */
 	ret = regmap_write(ak4118->regmap, AK4118_REG_INT1_MASK, 0x00);
 	if (ret < 0) {
 		dev_err(component->dev,
 			"failed to write regmap 0x%x 0x%x: %d\n",
 			AK4118_REG_INT1_MASK, 0x00, ret);
 		return ret;
 	}

 	/* rx detect enable on all channels */
 	ret = regmap_write(ak4118->regmap, AK4118_REG_RX_DETECT, 0xff);
 	if (ret < 0) {
 		dev_err(component->dev,
 			"failed to write regmap 0x%x 0x%x: %d\n",
 			AK4118_REG_RX_DETECT, 0xff, ret);
 		return ret;
 	}

 	ret = snd_soc_add_component_controls(component, ak4118_iec958_controls,
 					 ARRAY_SIZE(ak4118_iec958_controls));
 	if (ret) {
 		dev_err(component->dev,
 			"failed to add component kcontrols: %d\n", ret);
 		return ret;
 	}

 	return 0;
 }

 static void ak4118_remove(struct snd_soc_component *component)
 {
 	struct ak4118_priv *ak4118 = snd_soc_component_get_drvdata(component);

 	/* hold reset */
 	gpiod_set_value(ak4118->reset, 1);
 }

 static const struct snd_soc_component_driver soc_component_drv_ak4118 = {
 	.probe			= ak4118_probe,
 	.remove			= ak4118_remove,
 	.dapm_widgets		= ak4118_dapm_widgets,
 	.num_dapm_widgets	= ARRAY_SIZE(ak4118_dapm_widgets),
 	.dapm_routes		= ak4118_dapm_routes,
 	.num_dapm_routes	= ARRAY_SIZE(ak4118_dapm_routes),
 	.idle_bias_on		= 1,
 	.use_pmdown_time	= 1,
 	.endianness		= 1,
 	.non_legacy_dai_naming	= 1,
 };

 static const struct regmap_config ak4118_regmap = {
 	.reg_bits = 8,
 	.val_bits = 8,

 	.reg_defaults = ak4118_reg_defaults,
 	.num_reg_defaults = ARRAY_SIZE(ak4118_reg_defaults),

 	.cache_type = REGCACHE_NONE,
 	.max_register = AK4118_REG_MAX - 1,
 };

 static int ak4118_i2c_probe(struct i2c_client *i2c,
 			    const struct i2c_device_id *id)
 {
 	struct ak4118_priv *ak4118;
 	int ret;

 	ak4118 = devm_kzalloc(&i2c->dev, sizeof(struct ak4118_priv),
 			      GFP_KERNEL);
 	if (ak4118 == NULL)
 		return -ENOMEM;

 	ak4118->regmap = devm_regmap_init_i2c(i2c, &ak4118_regmap);
 	if (IS_ERR(ak4118->regmap))
 		return PTR_ERR(ak4118->regmap);

 	i2c_set_clientdata(i2c, ak4118);

 	ak4118->reset = devm_gpiod_get(&i2c->dev, "reset", GPIOD_OUT_HIGH);
 	if (IS_ERR(ak4118->reset)) {
 		ret = PTR_ERR(ak4118->reset);
 		if (ret != -EPROBE_DEFER)
 			dev_err(&i2c->dev, "Failed to get reset: %d\n", ret);
 		return ret;
 	}

 	ak4118->irq = devm_gpiod_get(&i2c->dev, "irq", GPIOD_IN);
 	if (IS_ERR(ak4118->irq)) {
 		ret = PTR_ERR(ak4118->irq);
 		if (ret != -EPROBE_DEFER)
 			dev_err(&i2c->dev, "Failed to get IRQ: %d\n", ret);
 		return ret;
 	}

 	ret = devm_request_threaded_irq(&i2c->dev, gpiod_to_irq(ak4118->irq),
 					NULL, ak4118_irq_handler,
 					IRQF_TRIGGER_RISING | IRQF_ONESHOT,
 					"ak4118-irq", ak4118);
 	if (ret < 0) {
 		dev_err(&i2c->dev, "Fail to request_irq: %d\n", ret);
 		return ret;
 	}

 	return devm_snd_soc_register_component(&i2c->dev,
 				&soc_component_drv_ak4118, &ak4118_dai, 1);
 }

 static const struct of_device_id ak4118_of_match[] = {
 	{ .compatible = "asahi-kasei,ak4118", },
 	{}
 };
 MODULE_DEVICE_TABLE(of, ak4118_of_match);

 static const struct i2c_device_id ak4118_id_table[] = {
 	{ "ak4118", 0 },
 	{}
 };
 MODULE_DEVICE_TABLE(i2c, ak4118_id_table);

 static struct i2c_driver ak4118_i2c_driver = {
 	.driver  = {
 		.name = "ak4118",
 		.of_match_table = of_match_ptr(ak4118_of_match),
 	},
 	.id_table = ak4118_id_table,
 	.probe  = ak4118_i2c_probe,
 };

 module_i2c_driver(ak4118_i2c_driver);

 MODULE_DESCRIPTION("Asahi Kasei AK4118 ALSA SoC driver");
 MODULE_AUTHOR("Adrien Charruel <adrien.charruel@devialet.com>");
 MODULE_LICENSE("GPL");
	// SPDX-License-Identifier: GPL-2.0
	/*
	* ak4118.c -- Asahi Kasei ALSA Soc Audio driver
	*
	* Copyright 2018 DEVIALET
	*/

	#include <linux/i2c.h>
	#include <linux/gpio/consumer.h>
	#include <linux/module.h>
	#include <linux/of_device.h>
	#include <linux/of_gpio.h>
	#include <linux/regmap.h>
	#include <linux/slab.h>

	#include <sound/asoundef.h>
	#include <sound/core.h>
	#include <sound/initval.h>
	#include <sound/soc.h>

	#define AK4118_REG_CLK_PWR_CTL 0x00
	#define AK4118_REG_FORMAT_CTL 0x01
	#define AK4118_REG_IO_CTL0 0x02
	#define AK4118_REG_IO_CTL1 0x03
	#define AK4118_REG_INT0_MASK 0x04
	#define AK4118_REG_INT1_MASK 0x05
	#define AK4118_REG_RCV_STATUS0 0x06
	#define AK4118_REG_RCV_STATUS1 0x07
	#define AK4118_REG_RXCHAN_STATUS0 0x08
	#define AK4118_REG_RXCHAN_STATUS1 0x09
	#define AK4118_REG_RXCHAN_STATUS2 0x0a
	#define AK4118_REG_RXCHAN_STATUS3 0x0b
	#define AK4118_REG_RXCHAN_STATUS4 0x0c
	#define AK4118_REG_TXCHAN_STATUS0 0x0d
	#define AK4118_REG_TXCHAN_STATUS1 0x0e
	#define AK4118_REG_TXCHAN_STATUS2 0x0f
	#define AK4118_REG_TXCHAN_STATUS3 0x10
	#define AK4118_REG_TXCHAN_STATUS4 0x11
	#define AK4118_REG_BURST_PREAMB_PC0 0x12
	#define AK4118_REG_BURST_PREAMB_PC1 0x13
	#define AK4118_REG_BURST_PREAMB_PD0 0x14
	#define AK4118_REG_BURST_PREAMB_PD1 0x15
	#define AK4118_REG_QSUB_CTL 0x16
	#define AK4118_REG_QSUB_TRACK 0x17
	#define AK4118_REG_QSUB_INDEX 0x18
	#define AK4118_REG_QSUB_MIN 0x19
	#define AK4118_REG_QSUB_SEC 0x1a
	#define AK4118_REG_QSUB_FRAME 0x1b
	#define AK4118_REG_QSUB_ZERO 0x1c
	#define AK4118_REG_QSUB_ABS_MIN 0x1d
	#define AK4118_REG_QSUB_ABS_SEC 0x1e
	#define AK4118_REG_QSUB_ABS_FRAME 0x1f
	#define AK4118_REG_GPE 0x20
	#define AK4118_REG_GPDR 0x21
	#define AK4118_REG_GPSCR 0x22
	#define AK4118_REG_GPLR 0x23
	#define AK4118_REG_DAT_MASK_DTS 0x24
	#define AK4118_REG_RX_DETECT 0x25
	#define AK4118_REG_STC_DAT_DETECT 0x26
	#define AK4118_REG_RXCHAN_STATUS5 0x27
	#define AK4118_REG_TXCHAN_STATUS5 0x28
	#define AK4118_REG_MAX 0x29

	#define AK4118_REG_FORMAT_CTL_DIF0 (1 << 4)
	#define AK4118_REG_FORMAT_CTL_DIF1 (1 << 5)
	#define AK4118_REG_FORMAT_CTL_DIF2 (1 << 6)

	struct ak4118_priv {
	struct regmap *regmap;
	struct gpio_desc *reset;
	struct gpio_desc *irq;
	struct snd_soc_component *component;
	};

	static const struct reg_default ak4118_reg_defaults[] = {
	{AK4118_REG_CLK_PWR_CTL, 0x43},
	{AK4118_REG_FORMAT_CTL, 0x6a},
	{AK4118_REG_IO_CTL0, 0x88},
	{AK4118_REG_IO_CTL1, 0x48},
	{AK4118_REG_INT0_MASK, 0xee},
	{AK4118_REG_INT1_MASK, 0xb5},
	{AK4118_REG_RCV_STATUS0, 0x00},
	{AK4118_REG_RCV_STATUS1, 0x10},
	{AK4118_REG_TXCHAN_STATUS0, 0x00},
	{AK4118_REG_TXCHAN_STATUS1, 0x00},
	{AK4118_REG_TXCHAN_STATUS2, 0x00},
	{AK4118_REG_TXCHAN_STATUS3, 0x00},
	{AK4118_REG_TXCHAN_STATUS4, 0x00},
	{AK4118_REG_GPE, 0x77},
	{AK4118_REG_GPDR, 0x00},
	{AK4118_REG_GPSCR, 0x00},
	{AK4118_REG_GPLR, 0x00},
	{AK4118_REG_DAT_MASK_DTS, 0x3f},
	{AK4118_REG_RX_DETECT, 0x00},
	{AK4118_REG_STC_DAT_DETECT, 0x00},
	{AK4118_REG_TXCHAN_STATUS5, 0x00},
	};

	static const char * const ak4118_input_select_txt[] = {
	"RX0", "RX1", "RX2", "RX3", "RX4", "RX5", "RX6", "RX7",
	};
	static SOC_ENUM_SINGLE_DECL(ak4118_insel_enum, AK4118_REG_IO_CTL1, 0x0,
	ak4118_input_select_txt);

	static const struct snd_kcontrol_new ak4118_input_mux_controls =
	SOC_DAPM_ENUM("Input Select", ak4118_insel_enum);

	static const char * const ak4118_iec958_fs_txt[] = {
	"44100", "48000", "32000", "22050", "11025", "24000", "16000", "88200",
	"8000", "96000", "64000", "176400", "192000",
	};

	static const int ak4118_iec958_fs_val[] = {
	0x0, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9, 0xA, 0xB, 0xC, 0xE,
	};

	static SOC_VALUE_ENUM_SINGLE_DECL(ak4118_iec958_fs_enum, AK4118_REG_RCV_STATUS1,
	0x4, 0x4, ak4118_iec958_fs_txt,
	ak4118_iec958_fs_val);

	static struct snd_kcontrol_new ak4118_iec958_controls[] = {
	SOC_SINGLE("IEC958 Parity Errors", AK4118_REG_RCV_STATUS0, 0, 1, 0),
	SOC_SINGLE("IEC958 No Audio", AK4118_REG_RCV_STATUS0, 1, 1, 0),
	SOC_SINGLE("IEC958 PLL Lock", AK4118_REG_RCV_STATUS0, 4, 1, 1),
	SOC_SINGLE("IEC958 Non PCM", AK4118_REG_RCV_STATUS0, 6, 1, 0),
	SOC_ENUM("IEC958 Sampling Freq", ak4118_iec958_fs_enum),
	};

	static const struct snd_soc_dapm_widget ak4118_dapm_widgets[] = {
	SND_SOC_DAPM_INPUT("INRX0"),
	SND_SOC_DAPM_INPUT("INRX1"),
	SND_SOC_DAPM_INPUT("INRX2"),
	SND_SOC_DAPM_INPUT("INRX3"),
	SND_SOC_DAPM_INPUT("INRX4"),
	SND_SOC_DAPM_INPUT("INRX5"),
	SND_SOC_DAPM_INPUT("INRX6"),
	SND_SOC_DAPM_INPUT("INRX7"),
	SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0,
	&ak4118_input_mux_controls),
	};

	static const struct snd_soc_dapm_route ak4118_dapm_routes[] = {
	{"Input Mux", "RX0", "INRX0"},
	{"Input Mux", "RX1", "INRX1"},
	{"Input Mux", "RX2", "INRX2"},
	{"Input Mux", "RX3", "INRX3"},
	{"Input Mux", "RX4", "INRX4"},
	{"Input Mux", "RX5", "INRX5"},
	{"Input Mux", "RX6", "INRX6"},
	{"Input Mux", "RX7", "INRX7"},
	};


	static int ak4118_set_dai_fmt_master(struct ak4118_priv *ak4118,
	unsigned int format)
	{
	int dif;

	switch (format & SND_SOC_DAIFMT_FORMAT_MASK) {
	case SND_SOC_DAIFMT_I2S:
	dif = AK4118_REG_FORMAT_CTL_DIF0 \| AK4118_REG_FORMAT_CTL_DIF2;
	break;
	case SND_SOC_DAIFMT_RIGHT_J:
	dif = AK4118_REG_FORMAT_CTL_DIF0 \| AK4118_REG_FORMAT_CTL_DIF1;
	break;
	case SND_SOC_DAIFMT_LEFT_J:
	dif = AK4118_REG_FORMAT_CTL_DIF2;
	break;
	default:
	return -ENOTSUPP;
	}

	return dif;
	}

	static int ak4118_set_dai_fmt_slave(struct ak4118_priv *ak4118,
	unsigned int format)
	{
	int dif;

	switch (format & SND_SOC_DAIFMT_FORMAT_MASK) {
	case SND_SOC_DAIFMT_I2S:
	dif = AK4118_REG_FORMAT_CTL_DIF0 \| AK4118_REG_FORMAT_CTL_DIF1 \|
	AK4118_REG_FORMAT_CTL_DIF2;
	break;
	case SND_SOC_DAIFMT_LEFT_J:
	dif = AK4118_REG_FORMAT_CTL_DIF1 \| AK4118_REG_FORMAT_CTL_DIF2;
	break;
	default:
	return -ENOTSUPP;
	}

	return dif;
	}

	static int ak4118_set_dai_fmt(struct snd_soc_dai *dai,
	unsigned int format)
	{
	struct snd_soc_component *component = dai->component;
	struct ak4118_priv *ak4118 = snd_soc_component_get_drvdata(component);
	int dif;
	int ret = 0;

	switch (format & SND_SOC_DAIFMT_MASTER_MASK) {
	case SND_SOC_DAIFMT_CBM_CFM:
	/* component is master */
	dif = ak4118_set_dai_fmt_master(ak4118, format);
	break;
	case SND_SOC_DAIFMT_CBS_CFS:
	/component is slave /
	dif = ak4118_set_dai_fmt_slave(ak4118, format);
	break;
	default:
	ret = -ENOTSUPP;
	goto exit;
	}

	/* format not supported */
	if (dif < 0) {
	ret = dif;
	goto exit;
	}

	ret = regmap_update_bits(ak4118->regmap, AK4118_REG_FORMAT_CTL,
	AK4118_REG_FORMAT_CTL_DIF0 \|
	AK4118_REG_FORMAT_CTL_DIF1 \|
	AK4118_REG_FORMAT_CTL_DIF2, dif);
	if (ret < 0)
	goto exit;

	exit:
	return ret;
	}

	static int ak4118_hw_params(struct snd_pcm_substream *substream,
	struct snd_pcm_hw_params *params,
	struct snd_soc_dai *dai)
	{
	return 0;
	}

	static const struct snd_soc_dai_ops ak4118_dai_ops = {
	.hw_params = ak4118_hw_params,
	.set_fmt = ak4118_set_dai_fmt,
	};

	static struct snd_soc_dai_driver ak4118_dai = {
	.name = "ak4118-hifi",
	.capture = {
	.stream_name = "Capture",
	.channels_min = 2,
	.channels_max = 2,
	.rates = SNDRV_PCM_RATE_22050 \| SNDRV_PCM_RATE_32000 \|
	SNDRV_PCM_RATE_44100 \| SNDRV_PCM_RATE_48000 \|
	SNDRV_PCM_RATE_88200 \| SNDRV_PCM_RATE_96000 \|
	SNDRV_PCM_RATE_176400 \| SNDRV_PCM_RATE_192000,
	.formats = SNDRV_PCM_FMTBIT_S16_LE \|
	SNDRV_PCM_FMTBIT_S24_3LE \|
	SNDRV_PCM_FMTBIT_S24_LE
	},
	.ops = &ak4118_dai_ops,
	};

	static irqreturn_t ak4118_irq_handler(int irq, void *data)
	{
	struct ak4118_priv *ak4118 = data;
	struct snd_soc_component *component = ak4118->component;
	struct snd_kcontrol_new *kctl_new;
	struct snd_kcontrol *kctl;
	struct snd_ctl_elem_id *id;
	unsigned int i;

	if (!component)
	return IRQ_NONE;

	for (i = 0; i < ARRAY_SIZE(ak4118_iec958_controls); i++) {
	kctl_new = &ak4118_iec958_controls[i];
	kctl = snd_soc_card_get_kcontrol(component->card,
	kctl_new->name);
	if (!kctl)
	continue;
	id = &kctl->id;
	snd_ctl_notify(component->card->snd_card,
	SNDRV_CTL_EVENT_MASK_VALUE, id);
	}

	return IRQ_HANDLED;
	}

	static int ak4118_probe(struct snd_soc_component *component)
	{
	struct ak4118_priv *ak4118 = snd_soc_component_get_drvdata(component);
	int ret = 0;

	ak4118->component = component;

	/* release reset */
	gpiod_set_value(ak4118->reset, 0);

	/* unmask all int1 sources */
	ret = regmap_write(ak4118->regmap, AK4118_REG_INT1_MASK, 0x00);
	if (ret < 0) {
	dev_err(component->dev,
	"failed to write regmap 0x%x 0x%x: %d\n",
	AK4118_REG_INT1_MASK, 0x00, ret);
	return ret;
	}

	/* rx detect enable on all channels */
	ret = regmap_write(ak4118->regmap, AK4118_REG_RX_DETECT, 0xff);
	if (ret < 0) {
	dev_err(component->dev,
	"failed to write regmap 0x%x 0x%x: %d\n",
	AK4118_REG_RX_DETECT, 0xff, ret);
	return ret;
	}

	ret = snd_soc_add_component_controls(component, ak4118_iec958_controls,
	ARRAY_SIZE(ak4118_iec958_controls));
	if (ret) {
	dev_err(component->dev,
	"failed to add component kcontrols: %d\n", ret);
	return ret;
	}

	return 0;
	}

	static void ak4118_remove(struct snd_soc_component *component)
	{
	struct ak4118_priv *ak4118 = snd_soc_component_get_drvdata(component);

	/* hold reset */
	gpiod_set_value(ak4118->reset, 1);
	}

	static const struct snd_soc_component_driver soc_component_drv_ak4118 = {
	.probe = ak4118_probe,
	.remove = ak4118_remove,
	.dapm_widgets = ak4118_dapm_widgets,
	.num_dapm_widgets = ARRAY_SIZE(ak4118_dapm_widgets),
	.dapm_routes = ak4118_dapm_routes,
	.num_dapm_routes = ARRAY_SIZE(ak4118_dapm_routes),
	.idle_bias_on = 1,
	.use_pmdown_time = 1,
	.endianness = 1,
	.non_legacy_dai_naming = 1,
	};

	static const struct regmap_config ak4118_regmap = {
	.reg_bits = 8,
	.val_bits = 8,

	.reg_defaults = ak4118_reg_defaults,
	.num_reg_defaults = ARRAY_SIZE(ak4118_reg_defaults),

	.cache_type = REGCACHE_NONE,
	.max_register = AK4118_REG_MAX - 1,
	};

	static int ak4118_i2c_probe(struct i2c_client *i2c,
	const struct i2c_device_id *id)
	{
	struct ak4118_priv *ak4118;
	int ret;

	ak4118 = devm_kzalloc(&i2c->dev, sizeof(struct ak4118_priv),
	GFP_KERNEL);
	if (ak4118 == NULL)
	return -ENOMEM;

	ak4118->regmap = devm_regmap_init_i2c(i2c, &ak4118_regmap);
	if (IS_ERR(ak4118->regmap))
	return PTR_ERR(ak4118->regmap);

	i2c_set_clientdata(i2c, ak4118);

	ak4118->reset = devm_gpiod_get(&i2c->dev, "reset", GPIOD_OUT_HIGH);
	if (IS_ERR(ak4118->reset)) {
	ret = PTR_ERR(ak4118->reset);
	if (ret != -EPROBE_DEFER)
	dev_err(&i2c->dev, "Failed to get reset: %d\n", ret);
	return ret;
	}

	ak4118->irq = devm_gpiod_get(&i2c->dev, "irq", GPIOD_IN);
	if (IS_ERR(ak4118->irq)) {
	ret = PTR_ERR(ak4118->irq);
	if (ret != -EPROBE_DEFER)
	dev_err(&i2c->dev, "Failed to get IRQ: %d\n", ret);
	return ret;
	}

	ret = devm_request_threaded_irq(&i2c->dev, gpiod_to_irq(ak4118->irq),
	NULL, ak4118_irq_handler,
	IRQF_TRIGGER_RISING \| IRQF_ONESHOT,
	"ak4118-irq", ak4118);
	if (ret < 0) {
	dev_err(&i2c->dev, "Fail to request_irq: %d\n", ret);
	return ret;
	}

	return devm_snd_soc_register_component(&i2c->dev,
	&soc_component_drv_ak4118, &ak4118_dai, 1);
	}

	static const struct of_device_id ak4118_of_match[] = {
	{ .compatible = "asahi-kasei,ak4118", },
	{}
	};
	MODULE_DEVICE_TABLE(of, ak4118_of_match);

	static const struct i2c_device_id ak4118_id_table[] = {
	{ "ak4118", 0 },
	{}
	};
	MODULE_DEVICE_TABLE(i2c, ak4118_id_table);

	static struct i2c_driver ak4118_i2c_driver = {
	.driver = {
	.name = "ak4118",
	.of_match_table = of_match_ptr(ak4118_of_match),
	},
	.id_table = ak4118_id_table,
	.probe = ak4118_i2c_probe,
	};

	module_i2c_driver(ak4118_i2c_driver);

	MODULE_DESCRIPTION("Asahi Kasei AK4118 ALSA SoC driver");
	MODULE_AUTHOR("Adrien Charruel <adrien.charruel@devialet.com>");
	MODULE_LICENSE("GPL");